Packing.



A. L. COLE.

PACKING.

APPLICATION FILED AUG. 3, 1909. 97%68, Patented 0cfi.11,1910.

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ALBERT L. COLE, OF AUBURNDALE, MASSACHUSETTS, ASSIGNOR TO FRANK C. PAR-MENTER, OF GLOUCESTER, MASSACHUSETTS.

PACKING.

To all whom it may concern:

Be it known that I, ALBERT L. COLE, a citizen of the United States,residing at Auburndale, in the county of MiddleseX and State ofMassachusetts, have invented a new and useful Improvement in Packing, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

The invention relates to packing for piston-rods, pumps and machinerygenerally and especially to packing made up partly of fibrous materialand partly of metal.

Heretofore in the use of packings employ- I ing metal and fibrousmaterials in their construction, great difficulty has been experiencedwhere the packing has been subjected to a high temperature becausefibrous ma terials such as hemp, flax and the like are charred orpartially destroyed by the heat. Under such conditions the packingshrinks and leaks requiring constant manipulation of the gland in thestuffing-box to take up the shrinkage. The life of such packing is veryshort and its efliciency is materially decreased by the heat all ofwhich necessitates frequent repacking.

The main object of the invention is to produce a packing made up of acombination of fibrous material and metal which is adapted to resist ahigh temperature and which can be used under such conditions withoutbeing injured by the heat.

Another object is to secure a packing which is flexible and compressibleand yet presents a metal surface to the moving parts.

A further object is to obtain simplicity and economy of constructioncombined with eificiency and durability.

The following is a description of the invention, reference being made tothe accompanying drawings, in which:

Figure 1 is a side elevation of a section of the packing; Fig. 2 is acentral longitudinal sectional View of the same; and Fig. 3 is across-sectional view of the same.

The packing is composed entirely of asbestos fiber and metal arrangedand combined as hereinafter described, and is designed to be made incontinuous rope form. In the drawings is shown a small section ofpacking which illustrates the arrangement of the metal and asbestos.

The method of making the packing is as follows: A central body or coreis formed of Specification of Letters Patent.

Application filed August 3, 1909.

Patented Oct. 11, 1910.

Serial No. 511,031.

strings or strands composed entirely of asbestos fiber and laid insubstantial parallelism. This core may be made of any size to conform tothe size of the finished packing. Around the core is wound one or moreof the asbestos strings or strands in a close even and single layer andoutside of this is wound an outer layer made up of asbestos stringsenveloped entirely in Babbitt or anti-friction metal. If desired,additional layers of the asbestos strings may be wound inside the outerlayer of metal-covered strands, but I found for general use that oneinner layer is preferable. The metalcovered strand composing the outertransverse layer is made by running off the metal in ribbon form,V-shaped in cross-section, laying the asbestos string within the V andthen twisting the metal ribbon around the string. The packing may bemade by hand or by suitable machinery.

In the drawings, 1 represents the strands in the core, 2 the strandscomprising the inner transverse layer, 3 the strands making up the outertransverse layers, each strand 3 having a metal covering or envelop 4.The strands 1, 2 and 3 are all of the same material, namely, asbestosfiber.

Having been completed in rope form, the packing is then ready for useand may be used by cutting off suitable lengths. In that condition, itis substantially circular in cross-section and is compressible andflexible. For some uses it may be preferable to make the packing square,triangular or other form in cross-section or to compress it,

all of which may be done by passing the pack-"-- ing between rollssuitably formed and adjusted. Furthermore packing in ring form may beprepared by taking suitable lengths and molding and compressing them inring molds. In fact the packing may be given various forms and degreesof hardness by rolls or molds and by compression in order to conform todifferent conditions of use.

It will be observed that since the packing is composed largely ofasbestos fiber, extreme heat will have no effect upon the packing and itwill wear until the outer metal covered layer is worn entirely away.After the packing has been installed for a short period, it will befound that the abrasion of the moving parts forms the metal coveringupon that part of the packing in contact with them into a smooth bearingor central body and an outer body composed inner layer of asbestos andan outer layer of asbestos strands enveloped in metal; both of saidlayers being Wound transversely 5 around said core.

In testimony whereof, I hereunto set my hand, in the presence of twosubscribing Witnesses this the seventh day of J uly, 1909.

ALBERT L. COLE.

surface having all the advantages of metallic packing.

hat is claimed is 1. In a packing, the combination of a core of an innerlayer of strands of asbestos and an outer layer of strands of asbestosenveloped in metal; both of said layers being Wound transversely aroundsaid core.

2. In a packing, the combination of a core or central body made up ofstrands of asbestos and an outer body composed of an Vitnesses F. J. V.DAKIN, MABELLE MAoKPARRoN.

